The HY57V281620HCT-8I is a 256Mbit SDRAM (Synchronous Dynamic Random-Access Memory) chip manufactured by Hynix Semiconductor. It's designed for applications requiring high-speed and high-density memory, commonly found in computing and embedded systems.

Applications:

• PC Main Memory
• Graphics Cards
• Networking Devices (Routers, Switches)
• Embedded Systems
• Printers

Features:

• Capacity: 256Mbit (16M x 16)
• Organization: Configured as 16M words x 16 bits x 4 banks
• Data Rate: Up to 133 MHz (PC133)
• Interface: LVTTL compatible inputs
• Power Supply: 3.3V ± 0.3V
• Refresh: Auto and Self Refresh Modes
• Package: TSOP II 54-Pin
• Operating Temperature: 0°C to 70°C

Benefits:

• High Bandwidth: Provides fast data transfer rates, improving system performance.
• Large Capacity: 256Mbit density allows for storing a significant amount of data.
• Low Power Consumption: Designed for efficient power usage, extending battery life in portable devices.
• Reliability: Hynix Semiconductor is a reputable manufacturer known for producing reliable memory chips.
• Cost-Effective: SDRAM technology offers a balance between performance and cost.

Additional Details:

This SDRAM component is often used in older systems that predate DDR memory. It's important to ensure compatibility with the memory controller and motherboard when using this chip. The -8I indicates a speed grade, specifically a clock cycle time of 8ns, corresponding to a maximum clock frequency of 125MHz. Understanding the specific timing parameters and refresh rates is critical for proper system integration. It operates with a 3.3V power supply, which is typical for SDRAM. The TSOP II 54-Pin package allows for surface mounting on PCBs.